3/15/72 WTMP (V)
NAME /tmp/wtmp -- user login history
SYNOPSIS --
DESCRIPTION This file records all logins and logouts. Its
format is exactly like utmp(V) except that a null
user name indicates a logout on the associated
typewriter, and the typewriter name 'x' indicates
that UNIX was rebooted at that point.
Wtmp is maintained by login(I) and init(VII).
Neither of these programs creates the file, so if
it is removed record-keeping is turned off.
FILES --
SEE ALSO init(VII), login(I), tacct(I), acct(I)
DIAGNOSTICS --
BUGS --
OWNER ken, dmr